Overtravel drawer support



Sept. 26, 1939. B. G. RAND OVERTRAVEL DRAWER SUPPORT Filed Nov. 5, 19585 Sheets-Sheet l m Q B 3 Q S S ft :l ,N i llllllllllllllllllllllll f C I.IIIIIHH lllllllllllulllllllllllnlllllh"HUHUJIII ...1, om. uw, rww .Qw nm a N at w m .A

wiw n w m\ Sept. 26, 1939. B. G. RAND ovERTRAvEL DRAWER SUPPORT FiledNov. 5, 1958 5 Sheets-Sheet 2 Sept. 26, 1939. B, G. RAND OVERTRAVELDRAWER SUPPORT Filed Nov. 5, 1938 5 Sheets-Sheetl 25 New Sept. 26, 1939.B Q RAND OVERTRAVEL DRAWER SUPPORT Filed Nov. 5, 1958 5 Sheets-Sheet 4Sept. 26, 1939.. ma. G. HAND OVERTRAVEL DRAWER SUPPORT Filed NOV. 5,1938 5 Sheets-Shee 5 Benjamin GJZam,

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Patented Sept. 26, 1939 UNITED STATES PATENT OFFICE to Remington RandInc., Buffalo,

Application November 5, 1933, Serial No. 239,076

. ,11 Claims.

This invention relates to improvements in drawer guides or supports,particularly adapted for supporting the drawers of filing cabinets inwhich correspondence, cards and the like are usually filed in verticalposition.

'I'he invention comprehends the provision of a positive progression typeof drawer supporting structure that will provide for the free suspensionof a drawer in a cabinet or casing for movement from a housed positionin the cabinet to a forwardly extending position 'in which the rear endy of the drawer is spaced outwardly in front of the front end of thecabinet for providing unobstructed access to the flied material at therear of the drawer.

Heretofore, in progressive drawer suspension devices, the rear end ofthe drawer. track has been supported in contact withl a bearing or supnporting roller in the forwardly extending 'position that has theopposite portion of its periphery engaged with the front end of thecasing track, while the intermediate member has 'the forward endprojecting outwardly beyond the casing track to cooperate with thedrawer track -26 and the casing track in supporting and distributing theweight of the drawer between several tracks and bearings, so that thedrawer is freely movable into and out of its compartment in the cabinet.This bearing or supporting roller provides for the progressive feed ofthe suspension mechanism. Heretofore, it has not been possible to movethe rear end of the drawer outwardly beyond the front end ofthe cabinetor casing in a progressive drawer suspension due to the necessity ofhaving the supporting wheel or bearing contacting the rear end of thedrawer track, also supported on and contacting the front end of thecasing track, since it would not be possible 'without this relationbetween the drawer track 4o and casing track to secure a progressivemovement of the intermediate member in proportionate relation to themovement of the drawer track into and out of the cabinet between itsforward and rear limits of movement. Therefore, a practical smoothoperating progressive drawer suspension, meeting these requirements hasnot been made heretofore," except where the rear end of the drawerprojects partially into the 4casing in the open or forward position ofthe drawer.

l This invention overcomes this difficulty with prior art structures byproviding a structure wherein the drawer track can haveits rear endmoved to a position spaced outwardly in front of the casing track, aswell as in front of the casing,

and yet have a driving mechanism that will uniformly and progressivelyoperate or feed the intermediate carrying means in proportionaterelation to the movement of the drawer track.

The invention comprehends an improvement in 5 the art by providing anoperating means that has parts engaging the rear end of the drawer`track in its forwardly extending position beyond the front end of thecasing and casing track, and at the same time other parts associatedtherewith l0 and driven thereby that contact the forward end of thecasing track and through this engagement secure uniform progressiveoperation of the intermediate carrying means relative to the drawertrack throughout movement thereof from 15 the forwardly extendingposition 'in front of the cabinet to a rear position where the drawer ishoused in the cabinet.

In the drawings:

Fig. 1 is a side elevation of a drawer and a 0 fragmentary portion of acabinet or casing therefor, broken away and illustrating the drawersupporting mechanism in side elevation, the drawer being shown in theopen or forwardly extending position with the rear end spaced outwardlybeyond the front of the cabinet.

Fig. 2 is a view similar to Fig. 1, showing the drawer in the rear orhoused position in the cabinet or casing. v

Fig. 3 is an enlarged fragmentary plan view of 0 the intermediatecarrying member for the drawer,

Fig. 4 is an enlarged cross section taken on line 4 4 of Fig. 2.

Fig. 5 is an enlarged cross section taken on line 5 5 of Fig. 2. 35

Fig. 6 is an enlarged cross section taken on line 6-6 of Fig. 2.

Fig. 7 is a view similar to Fig. 1 showing a modied form ofconstruction.

Fig, 8 illustrates the construction shown in Fig.

7 in the closed or housed position of the drawer in the cabinet.

Fig. 9 is an enlarged cross section taken on line 9--9 of Fig. 8.

Fig. 10 is an enlarged cross section taken on 45 line IU-f-IU of Fig. 8.

Fig. 11 is a view similar to Fig. 1 showing still another modifiedconstruction of drawer support.

Fig.y 12 shows the drawer and supporting mechanism shown in Fig. 11 inthe rear position 50 when the drawer is housed in the cabinet.

Fig. 13 shows the drawer supporting mechanism in enlarged fragmentaryside elevation constructed as shown in Figs. 11 and 12, with portionsbroken away to illustrate details of construction.

Fig. 14 is a cross section taken on line I4-I4 of Fig. 13.

Fig. 15 is a cross section taken on line I5-I5 of Fig. 13.

Fig. 16 is a cross section taken on line I-IG of Fig. 12.

Fig- 1'1 is an enlarged fragmentary perspective showing the relation ofa ball and roller assembly providing a bearing between the drawer trackand the intermediate supporting member.

Fig. 18 shows an enlarged fragmentary perspective of the drawersupporting mechanism at one side of a drawer illustrating the centralportion of the intermediate supporting member to show the constructionand relation between the drawer track, the intermediate member and thecasing track, together with the pinion feed mechanism for the purpose ofillustrating the details of construction and relation of the parts.

Referring to Figs. l to 6 inclusive, I indicates a conventional form offiling cabinet or casing, constructed in a well known manner to receiveone or more drawers 2, only one drawer and a fragment of the casing forhousing said drawer being shown. The drawer 2 is of conventional formhaving sides 3, a rear end 4 and a drawer front 5 provided with theusual handle 8 projecting forwardly from front 5 to be manually grippedfor moving the drawer into and out of the cabinet or casing.

The drawer support including the features of this invention has a casingtrack 1 formed of sheet metal having a central portion 8 formed at theupper and lower edges with laterally extending flanges 9 and I0terminating in oppositely projecting edge portions I I offset in spacedparallel relation to central portion 8.

Two casing tracks 1 are provided for each drawer, one mounted on theinside of the lcabinet or casing, at each side thereof, and locatedadjacent each side wall of drawer 2, the track at one side of eachcabinet being arranged in opposed relation to the track on the oppositeside.

An intermediate carrying means or member indicated by numeral I2 has apair of oppositely formed side members I3 arranged one at each side ofthe cabinet, to fit in casing tracks 1 for longitudinal movement backand forth therein. Each side member I3 is joined together by transversestrips I4 to provide a carriage member bodily movable as a unit incasing tracks 1.

Each side member I3 is formed of sheet metal having the upper portion I5offset outwardly from lower portion I6, while the upper edge of lowerportion I6 is joined to the lower edge of upper portion I5 by alaterally extending portion I1. The lower edge of lower portion I6 isprovided with a lateral inwardly directed flange I8 to which oppositeends of cross bars I4 are secured.

A bearing roller I8 is rotatably mounted on upper portion I5 of eachside member I3 on the inside face at the rear end, as clearly shown inFigs. 3 and 5. The periphery of roller I3 projects above the upper edgeof side member I3 and has peripheral engagement with the under face oflateral flange 9 of casing track 1. Forwardly of the central portion ofeach member I3 is mounted bearing 20 on upper portion I5, as clearlyshown in Figs. 3 and 5.

The drawer track 2I of angular form in cross section, has one flangeportion suitably secured to side wall 3 of drawer 2, one drawer trackbeing mounted on each side wall, and the other flange portion projectinglaterally outward from the side wall as shown in Figs. 4 to 6 andarranged to have the upper face of the laterally projecting portion ofeach drawer track 2| engage with the periphery of bearings 2lil belowthe mounting for said bearing on the intermediate carrying member.Bearings 20 are positioned on intermediate carrying member I2 so theywill have peripheral contact with the rear end of drawer track 2I at aposition spaced outwardly in front of casing I as shown in Fig. 1.

Drawer tracks 2| also have bearing engagement with the periphery ofbearing rollers 22 at the uppermost peripheral portion. Bearing rollers22 are rotatably mounted at the forward end of side members I3 ofcarriage I2 on the lower portion I6 thereof. The upper peripheralportion of each bearing roller projects through slot 23 in laterallyextending portion I1 of the side member, so the upper peripheral portionmay engage the bottom face of the laterally extending part of drawertrack 2|, as shown in Fig. 4. The opposite peripheral portion of eachbearing roller 22, from that engaged with drawer track 2l, projectsbelow the lower edge of side sections I3 and is arranged on intermediatecarriage I2 for peripheral engagement with the upper face of flange Il)on casing track 1, as shown in Fig. 4, when intermediate carrying memberI2 has been movedv into the cabinet to such an extent that bearingroller 22 will ride onto the end of flange I0. This relation of theparts is also shown in Fig. 2. When intermediate carrying means I2 isextended outwardly of the casing, bearing roller 22 provides a freelyrolling support for the drawer through the medium of drawer tracks 2|and bearings 20.

A lever 24 is provided for each side member and is pivotally mounted onlower portion I6 at25. The central portion of each lever 24 is offsetoutwardly from lower portion I6, and the end opposite that pivoted at25, is formed with a slot 26 to receive a limiting pin 21 carried bylower section I8 for limiting the floating movement or pivotal movementof lever 24 relative to carriage I2. 'I'he central offset portion oflever 24 carries a wheel 28 rotatably mounted thereon in any suitablemanner, that has peripheral engagement with the underface of thelaterally extending ange of drawer track 2I at a position immediatelybelow bearing 20. Wheel 28 is located between the offset portion oflever 24 and lower section I6 as shown in Fig. 5, and the upperperipheral portion thereof engaging with drawer track 2I extends throughslot 29 in section I1 of side member I3. A pinion 30 of smaller diameterthan wheel 28 is secured on the outer side thereof as shown in Fig. 5and meshes with an idler pinion 3| rotatably mounted on lever 24.

Each lever 24 carries another wheel 32 rotatably mounted thereon at aposition spaced rearwardly from wheel 28 and provided with a pinion 33intermeshed with idler 3l, so that in the rotation of wheel 28, rotarymotion is transmitted by pinion 3| to wheel 32. Wheel 32 is arranged onlever 24 to have peripheral engagement in all positions of intermediatecarrying member I2 with the upper surface of lateral flange Ill ofcasing track 1.

Wheel 28 is arranged forwardly of the central yportion of carriage I2for support forwardly of the front end of casing I for engagement withthe rear end of drawer track 2I in the manner illustrated in Fig. 1 whenthe drawer is at its forward limit of movement, while wheel 32 isarranged rearwardly of the center of intermediate carrythe forward limitof movement of the drawer with the forward end of casing track 1.

Lever 24 provides a free floating mounting for wheels 28 and 32'so thatthe weight of the drawer and any material led in the drawer is exerteddownwardly on intermediate carriage member I2 which causes the roller 32to have peripheral engagement with the upper surface of ilange Ill ofcasing track 1 thereby moving lever 24 about its pivot to bring theperiphery of wheel 28 into engagement with the under'surface of drawertrack 2| and cause the upper surface to firmly engage the periphery ofbearing 2li. This causes a distribution of the weight in the drawerthrough intermediate carriage I2, wheels 28 and 32, and levers 24 tocasing tracks 1. A rm pe ripheral engagement of roller 28 with drawertrack 2| is obtained so that upon movement of the drawer manually fromthe open position as shown in Fig. 1 toward the closed position of Fig.2, drawer track 2| will cause wheel 28 to rotate and through the mediumof the gear connection between wheel 28 and wheel 32, wheel 32 will becaused to rotate and will drive intermediate carriage |2 atsubstantially half the rate of speed of drawer track 2 I. This willsecure a continuous progressive movement ina proportionate relationbetween drawer track 2| and carriage member I2, as the drawer moves intothe cabinet so they will assume the position shown in Fig. 2 in theclosed position of the draw er, where the drawer and its supportingmeans are entirely housed in overlapping relation with each other andcasing track 1 within thecasing. The above described structure forobtaining this progressive movement may hereinafter be referred to asfeed means or operating means.

A bearing roller 34 is rotatably mounted on stud 35 carried by lowerportion I6 of side member I3 and has a central opening 36 larger thansaid stud, as shown in Fig. 6, one bearing roller being mounted on eachside member I3. Bearing roller 34 has free vertical movement relative tointermediate carrying member I2. The upper' peripheral portion ofbearing roller 34 projects through slot 31 in lateral section I1 of sidemember I3 and engages with the under face of the laterally projectingportion of drawer track 2| as shown in Fig. 6 during a portion of themovement of the drawer track relative to the carriage. The lowerperipheral portion of roller 34 rides on casing track flange I0. Whenthe drawer is moved into the casing to a suiilcient extent, the rear endof the drawer track will engage roller 34 for support thereon duringcontinued movement into the cabinet in conjunction with support aiordedthrough wheels 28 and bearings 22. The relative free movement of bearingrollers 34 and lever 24 carrying wheels 28 compensate for variations inthe intermediate carriage I2 and casing track 1 so that the drawer willhave a free rolling movement between its outer position as shown in Fig.1 and the closed position illustrated in Fig. 2.

In order to limit the outward movement of the drawer from the cabinet,intermediate carrying member I2 has the rearmost strip I4 provided withstop I4 depending below strip |4 to engage strike bar I' atl the frontof the cabinet to arrest the forward movement thereof, as illustrated inFigs. 1 and 5. The outward movement of the drawer on carriage I2 islimited by stops 2' in the form of two small pieces of sheet metalmounted on the Ibottom of the drawer that engage the rear edge ofdepression sections I4" formed on front strip I4, as shown in Figs. 1and 3. The use of stops for limiting the outward movement of the draweris a common expedient in the art and it is to be understood that anyarrangement that will limit movement of the drawer in conjunction withthe particular drawer guide structure may be used in place of the stopmechanism above described, so long as it will allow the rear end of thedrawer to move outwardly beyond the front face of the cabinet.

A modified form of construction is illustrated in Figs. 7 to 10inclusive. The cabinet or casing 40 is constructed to receive a drawer4| having a rear end 42 and a drawer front 43. The drawer support orsuspension mechanism includes a pair of channel shaped casing tracks 44mounted one on each side of cabinet 48. The channels are arrangedto havethe flanges project inwardly in opposed lrelation to provide upper andlower tracks 45 and 45 respectively.

A pair of drawer tracks 41 are detachably mounted on opposite sides ofthe drawer and have one flange thereof projecting laterally from thesides of the drawer to provide a trackway v48.

An intermediate carrying means provides primary and secondary trackmembers 49 and 58,

respectively. Primary track member 49 is of channel shape in crosssection, there being a pair of these primary' track members arranged oneon each sideof the drawer to cooperate with drawer tracks 41. Secondarytrack members 50 are used in pairs, one at each side of the drawer andhave an angular structure in cross section, as shown in Figs. 9 and 10.Track members 50 have an upright strip portion 5| arranged adjacent andparallel to bottom track 46 of casing track 44. and a laterallyextending flange forming a trackway 52 along the lower edge. A bearing53 is mounted on the rear upper end of side portion 5| of track member50 and has the upper portion of its periphery extending above the upperedge of section 5I for rolling engagement on the under face of uppertrack flange 45 of casing track 44.

A bearing 54 is mounted in the central portion on strip section 5I abovethe upper edge of primary track member 49 for rolling engagementtherewith. A Wheel 55 is rotatably mounted below bearing 54 for lateralmovement relative to secondary member 50 toward and from bearing 54.Wheel 55 has the upper portion of its periphery engaging the lower faceof channel member 49 for rolling engagement with said channel member inopposed relation to bearing 54, while the lower portion of the peripheryof wheel 55 projects below the lower edge of secondary member 58 and hasbearing engagement on bottom track iiange 46 of casing track 44.Secondary track member 50 has ange 52.cut away to ac commodate wheel 55.

The rear end portion of primary track member 49 of the intermediatecarrying means has rolling engagement in the manner above described between bearing 54 and wheel 55 while primary member 49 has a bearing 56mounted in the central portion thereof provided with peripheral rollingengagement with the upper face of track flange 48 of drawer track 41. Awheel 51 rotatably and loosely mounted on channel 49 immediately belowbearing 56 has the upper portion of its periphery provided with rollingperipheral engagement on the under surface of track flange 48 in opposedrelation to the periphery of bearing 56, while the lower portion of itsperiphery periphery of wheel 51 and bearing 55.

has rolling engagement on track nange 52 oi. secondary track member 50.The forward end of primary member 49 is provided with a bearing 5lhaving rolling engagement with the under surface of track flange 4I forsupporting the front end of the drawer for free rolling engagement onprimary track member 49. Wheel 51 has the same type of mounting andoperates in the same manner as described above in connection with wheel55.

With this construction, the weight of drawer 4I is applied to bearings55 and 58 together with wheel 51 and through the weight of the drawerexerts a downward force on primary member 49 causing lost motion inwheel 51 to be taken up so that track flange 4I is gripped between theAny movement forward or rearward movement of track flange 4l betweenbearing 5B and wheel 51 produces a positive movement of wheel 51 torotate the same on its mounting which will result in the proportionateand progressive movement of. primary track member 49 at a proportionatespeed to drawer track 41.

The weight transmitted to primary track meml ber 4l is likewisetransmitted to secondary member 5l through wheel 51, bearing 54, andwheel 55. Secondary' track member 50` thereupon receives the weight ofthe drawer and lost motion in wheel 55 is taken up through the operationof the weight applied to member 50. Primary member 49 is gripped betweenbearing 54 and wheel 55 and movement of primary member 49 longitudinallywill be transmitted through the positive driving of wheel 55 on member50 to provide a proportionate progressive movement of member 5I relativeto drawer track 41 and primary member 49 of the intermediate carryingmeans.

The weight applied to secondary member 50 of the' intermediate carryingmeans is transmitted to casing track 44 by means of wheel 55 and bearing59. Idler bearing rollers 59, 59' and 59" are mounted on the rear endportions of drawer track 41, primary track member 49 and secondary trackmember 50 respectively, to provide added bearing support for carryingthe drawer weight as the drawer is moved into housed position in thecasing.

By reason of ythe structure described above in Figs. 7 to 10, it will benoted that the rear end of the drawer can be moved to a position whereit is spaced forwardly beyond the front of the casing and yet supportedfor free movement from the forwardly extended position to a housedposition within the cabinet. In the manual operation of the drawer fromthe fully extended position as shown in Fig. 7 to the closed position ofFig. 8, wheels 55 and 51 will operate to transmit the motion from drawertrack 41 to primary track 49 and secondary track 50 of the intermediatecarrying means to produce a relative proportionate movement of eachtrack to the other and to the drawer track to produce continuouspositive progressive movement of each of the track membersproportionately to one another, so they will be fully overlapped asshown in Fig. 8 when the drawer reaches the closed position. Thisprovides a structure similar to the first described drawer support, inthat the track members are not longer than the length of the drawer andhave no portion thereof projecting beyond either the front or the rearend of the drawer or casing in the closed position, when the drawer ishoused in its compartment in the cabinet. Yet, the parts are operated bythe feed or operating means above described to provide fre rollingprogressive movement from the housed position of the drawer to itsextended position with the rear end beyond the front wall of the cabinetwhere the drawer is efficiently supported so that access can be had toall of the files within the drawer particularly those at the rear end,without difficulty. Suitable means for limiting outward travel of drawer43 on the drawer guides is provided and shown ln Figs. 'I to l0 includesstop members indicated by numerals 44', 49' and 50'.

Another form of the invention is illustrated in Figs. 11 to 18. Acabinet or casing 60 of conventional construction receives a drawer 6Ihaving the rear end indicated at 62 and the drawer front at 63. Thedrawer support or suspension mechanism comprises supporting membersarranged at each side of the drawer, the supporting structure at oneside ofthe drawer being formed in an opposite manner to that of theother side, but otherwise identical. Therefore, the drawings illustratethe structure mounted at only one side of the drawer, since it will beobvious how the structure will be applied to the opposite side.

A casing track 64 is mounted on the inside of the side wall of thecasing in the usual manner such as by bolts, screws or equivalent means,not shown. Each casing track is formed of sheet metal and has a verticalcentral section 65 formed at the upper and lower edges with later-- allyextending track flanges 66 terminating at the free edges in inwardlydirected guide flanges 61 arranged in spaced parallel relation withcentral section 64 and forming channels at the upper andflower edges ofsection 65. Bearing retainer tongues 68, see Fig. 18, are formed at thefront ends of track flanges 66 and extend laterally to close the upperand lower channels to retain bearings in the channels from becomingdisengaged therefrom at the ends.

An intermediate carrying member is formed of sheet metal and arranged totelescope into casing track 64. Intermediate carrying member 19 has alongitudinal side section 1i having upper and lower edge portions 12 and13 offset laterally in spaced parallel relation. Lower edge portion 13has a laterally extending bearing flange 14 formed on the lower edgethereof and extending in the same direction therefrom as central section1I. The free edge of bearing flange 14 has a depending guide flange 15,shown in Figs. 16 and 18.

Upper offset portion 12 is provided with a return bend section 16forming an upper lateral guide flange and has the free edge terminatingin a laterally extending upper track flange 11. A depending guide flange18 is formed at the other edge of flange 11 and extends in spacedparallel relation to upper edge section 12. Upper edge section 12 andsection 16 project into the upper channel portion of casing track 64while lower guide flange projects into the lower channel portionthereof. A plurality of rollers 19 are positioned in the upper and lowerchannels of casing track 64 above and below intermediate member 10 sothat their peripheries ride at the upper portion of casing track 64 onupper track flange 66 of the casing track and upper track flange 11 ofintermediate member 10. At the lower portion of casing track 64 rollers19 have peripheral engagement on lower track flange 66 and support theintermediate track member through rolling engagement on lower trackflange 14 thereof. These rollers support the intermediate member forfree rolling engage- Cil ment in casing track 64 between the forwardand-.-V rear limits of movement of intermediate member 10 relative tothe casing track.

Another set of rollers 80 are positioned adjacent to rollers 19 andarranged in the channels at the upper and lower portions of casing track64 above and below intermediate member 10 for the purpose of providinglateral thrust bearings for intermediate member 10. The peripheries ofrollers 80 at the upper portion of casing track 64 ride on the innerface of upper bearing flange 61 and on the face of return bend section16 of intermediate member 10. At the lower portion of casing track 64,rollers 80 have peripheral engagement with bearing flange 15 ofintermediate member 10 and with the inner face of vertlcal section 65adjacent to lower track flange 66 of casing track 64. Rollers 19 and 80are provided with suitable retainers 8| to hold them in spaced relationlin their respective guideways. Retainers 8| have enlarged end portionsin the form illustrated in the drawings connected by rod sections 82 ofreduced diameter. Any other suitable means that provides roller retainerand spacing means for holding rollers 19 and 80 in proper spacedrelation for free rolling movement in the guideways along the trackflanges so that intermediate member 10-is freely guided in its movementback and forth relative to track member 64, may be used.

A drawer track is indicated at 85 and is constructed of sheet metalhaving a central section v86.formed at the upper and lower edges withlaterally extending vtrack flanges 81. Upper track flange 81 terminatesin an upwardly extending guide flange 88 while lower track flange 81terminates in an upwardly extending flange formed to provide a rack gear89. A drawer supporting angle member 90 is secured to central section 86in the manner indicated in Figs. 16 and 18, one flange thereof extendinglaterally inward from central section 86 as shown in Figs. 16 and 18 toreceive the bottom side por# tion of the drawer for supporting thedrawer on the drawer track. A plurality of rollers 9| are arrangedbetween the drawer track and intermediate carrying member 10. Some ofthe rollers are arranged to have peripheral engagement on the upper faceof track flange 81 of drawer track 85 and the under face of track'flange 11 of intermediate member 10, while the remaining rollers 9|have peripheral engagement with the under face of track flange 81 ofdrawer track 85 and the upper face of track flange 14. This provides amounting for drawer track 85 in intermediate carrying member 10 so itmay be freely moved from one limit to the other relative to and incarrying member 10. It will be noted that drawer track 85 hasinterfitting relation with intermediate carrying member 10 so as totelescope therein between flanges 14 and 11.

A plurality of rollers 92 are arranged to extend laterally relative todrawer track 85 adjacent to rollers 9| for peripheral engagement at theupper edge of drawer track 85 with guide flange 88 of drawer track 85and guide flange 18 of' intermediate member 10. The remaining rollers 92have peripheral bearing engagement between the lower inner edge ofoffset section 13 and the outer face of angle'member 90 where it extendsbelow lower track flange 81 as shown in Fig. 16. Rollers 92 carry thelateral`thrust applied on 4drawer track 85 and in conjunction withrollers 9| carrying the weight applied to drawer track 85,-`provide forfree movement of the drawer track in intermediate carrying member 10.

Bearing spacers 8| are used to retain and space bearing rollers 9| and92 to secure the proper smooth operation f" drawer track 85 inintermediate member 10 and relative thereto.

Fig. 17 discloses a modified type of roller bearing arrangement tosubstitute for .rollers 9| and 92 as well as rollers 19 and 80 `inmounting the drawer track in the intermediate slide and the intermediateslide in the casing track. 'I'his substitute bearing structure uses aball bearing 93 arranged within a tubular roller 94. 'I'he ball bearingcarries the weight and vertical thrust distributed from drawer track 85to intermediate member 19 while tubular roller 94 provides a bearing forthe lateral thrust. A plurality of bearings 93 and 94 may be arranged inthe same manner as rollers 9| and 92, and 19`and 80, in providing forthe free bearing support for the drawer track and intermediate carryingmember relative to each other and the casing track.

The forward ends of lower and upper track flanges 14 and 11 ofintermediate member 10 are provided with bearing retainer tongues 95 asshown in Fig. 13 to retain the bearing rollers against disengagementfrom their operative positions. The rear end of lower and upper trackflanges 14 and 11 are formed with laterally directed roller retainingtongues 96 extending into the casing track 64 to retain rollers 19 inengagement with tracks 14 and 11 and casing track 66.

The rear end of upper and lower track portions 81 of drawer track 85 areprovided with bearing retaining tongues 91 to retain bearings 9| and 92in engagement with drawer track anges 81.

A stop shoulder 98 is formed by oilsetting a portion of central section86 of drawer track 85 to the rear of the central portion thereof forengagement with a stop projection 99 offset to the opposite side ofcentral section 1| from sections 12 and 13, so that it will be alignedwith stop projection 98 as shown in Fig. 16 for engagement therewith tolimit outward travelling movement of drawer track 85 in intermediatecarrying member 10.

Casing track 64 is formed with an offset portion to provide a stopshoulder |0| thereon in the forward central portion of vertical section65. The rear end portion of central section 1| of intermediate member10' is formed with an opening |02 receiving a stop member |03. Stopmember |03 is formed of sheet metal having a central stop section |04formed at the upper and lower edges with laterally extending flanges |05terminating at the inner edges in outwardly extending retaining lips|06. Retaining lips |06 are formed to extend in' acute angular relationto central section |04 as shown in Fig. 14 with the forward ends spacedlaterally from the forward end of section |04 a distance sufficient toprovide for the engagement of the forward end of section |04 in theopening formed by offset portion |00 in casing slide 64, with the frontedges of lateral ilanges |05 engaging stop shoulder |0| in the mannershown in Fig. 14.

Stop member |04 is loosely arranged in opening |02 and retained thereinby leaf spring |01 having its central portion extending along the innerface of central section |04 between ilanges |03 with the opposite endportions extending beyond stop member |03 and overlying the outer faceof central section 1| of lintermediate carrying member 10 beyond opening|02. Struck-out tongues |08, retain spring strip |01 in position so thatthe central portion is flexed outwardly for normally urging stop member|03 outwardly into the position shown in Fig. 14 for engaging stopshoulder |I, This structure limits the forward travelling movement ofintermediate carrying member 10 relative to casing member 6l.

The stops above described for limiting relative movement of drawer track85 and intermediate carrying member 10 relative to each other and casetrack 6I are arranged to allow the rear end of drawer track 85 to moveoutwardly beyond the front end of casing '80 so that when drawer 8|supported by drawer track 85 is moved to the outward limit of movementcontrolled by said stops, the rear end 62 of the drawer will be spacedoutwardly in front of the cabinet or casing in the manner shown in Fig.11.

A feed or operating means is provided that will now be described.` Agear` |09, see Fig. 18, is rotatably mounted on stud ||0 carried bycentral section 1| of intermediate carrying member 1,0/

for rotation thereon with the teeth of said gear intermeshing with rack88 on drawer track 85. Stud I|0 mounts gear |08 at a position slightlyforward of the central portion of intermediate member 10 so that whendrawer track 85 is in its fully extended position to support the drawerwith rear end 82* spaced outwardly beyond the front of the cabinet, theteeth of said ge`ar will intermesh with the rear end portion of rack 89on the drawer track. An idler pinion is rotatable on stud ||2 mounted oncentral section 1| of intermediate carrying member 10 to the rear ofstud H0, with the teeth of pinion III intermeshing with the teeth onpinion |09 so that idler pinion wil be driven by pinion |08.

A gear H3 is rotatably mounted on stud ill carried by central sectionl1| of intermediate supporting member 10 with its teeth intermeshing withidler pinion as shown in Fig. 18. The teeth of gear H8 also intermeshwith rack |I5 extending longitudinally of casing track 64. Rack I I5 isformed by cutting a plurality of projections to provide rack teeth outof central section of the strip forming casingtrack 64 and extending thesame laterally inward in the manner illustrated in Figs. 16 and 18 sothat the projections are arranged in the same horizontal plane to form aplurality of spaced teeth to provide rack ||5. Gear IIB is mounted tothe rear of idler pinion I as shown in Fig. 18 and is arranged so thatwhen drawer track is extended to its outer limit of movement, the teethon gear' ||3l will intermesh with the projections forming the frontportion of rack ||5.

These gears |09 and H3, through the medium of pinion Iii, provide ameans for transmitting motion from drawer track 85 to casing track 84,and also to intermediate carrying member 10, so that when drawer track85 is moved inwardly from its outward limit of movement in front ofcabinet 60, it will progressively drive intermediate carrying member 10at approximately half the speed of the drawer track so as to obtain acontinuous progressive movement of intermediate member 10 with drawertrack 85 into the housed position of the drawer in the vcabinet when thedrawer track and intermediate carrying member will be substantiallyfully telescoped within casing track 64, as shown in Fig. 12. When thedrawer is withdrawn from the casing the reverse action takes place andintermediate carrying member 10 is progressively moved outwardly untilthe drawer reaches the position shown in Fig. 11 with rear end 02 spacedoutwardly in front of the front end of cabinet 80. For this entiremovement the operation of drawer track 85 secures positive progressivefeeding of intermediate member 10 outwardly therewith to the positionshown iny Fig. 11 through the medium of racks 89 and ||5 and gears |08,and H8.

It will, therefore, be seen that in each of theY constructions describedabove, the intermediate carrying means is positively driven inprogressive relation with the drawer track between the open and closedpositions wherein the open position provides a support for the drawerwith its rear end spaced outwardly beyond and in front of the cabinet.This provides free access to the filed material at the rear end of thedrawer overcoming a substantial disadvantage occasioned with structureswhere the rear endof the drawer does not move entirely out of thecabinet.

The invention in addition provides a bearing structure in combination asillustrated in the form of the invention shown in Figs. 11 to 18, and amounting for the drawer track and intermediate carrying means that isapplicable to each of the forms shown in the drawings, as well as theone illustrated, and thereby provide a structure wherein both thevertical and lateral stresses are distributed through cooperative rollerbearings for securing free movement of the drawer track and intermediatebearing members relative to each other in the casing track with a verylow percentage of friction.

The invention claimed is:

1. An over-travel drawer support for mounting a drawer in its casing,comprising a track on the drawer, a track on the casing, intermediatecarrying means, bearing supporting said drawer track for free movementon said intermediate carrying means and said carrying means for freemovement on said casing track, and feed means carried by saidintermediate carrying means engaged with the drawer track in advance ofthe center of said carrying means and with the casing track in the rearof said center, operable to drive saidv intermediate carrying meansprogressively on said casing track with and by movement of said drawertrack from a forward position wherein the rear end of said drawer trackis spaced forwardly of the front end of said casing track, and the rearend of the drawer is spaced in front of its casing, to a rearwardposition wherein the drawer track and intermediate carrying means aremoved into overlapping relation on the casing track and the drawer ishoused in its casing and vice versa.

2. An over-travel drawer support for mounting a drawer in its casing,comprising a track on the drawer, a track on the casing, intermediatecarrying means, bearings -mounting said drawer track and means for freerelative movement to each other on said casing track, to a forwardlyextending position with said means having one end projecting outwardlybeyond the forward end of said casing track and the front of saidcasing, and said drawer track supported by said means with the rear endspaced outwardly beyond the front end of said casing track and casing,to support said drawer with the rear end spaced outwardly beyond thefront of said casing, and to a rear position having said means anddrawer track housed in the casing with said drawer, and operating meansfor moving said intermediate carrying means vin proportionate relationto the movement of said drawer track and y in progressive relationtherewith between the forward and rear positions.`

3. An over-travel drawer support for mounting a drawer in its casing,comprising a track on the drawer, a track on the casing, intermediatecarrying means, bearings cooperating with said means and casing trackmounting said drawer `track and means for free relative movement torying means for moving said intermediate carrying means in proportionaterelation to the movement of said drawer track and in progressiverelation therewith between the forward and rear positions, having awheel engaging the rear end portion of said drawer track and anotherwheel engagingthe front end portion of said casing track in said,forwardly extending position, the wheel engaging said drawer track beingoperable in the movement thereof to transmit motion from said drawertrack to the wheel engaging said casing track during the operation ofsaid operating 'means in producing the progressive movement of saidintermediate carrying means.

4. An over-travel drawer support for mounting a drawer in its casing,comprising a track on the drawer, a track on the casing, interme-` diatecarrying means, bearings mounting said drawer track and means for freerelative movement to each other on said casing track to a forwardlyextending position with said means having one end projecting outwardlybeyond the forward end of said casing track and casing, and said drawertrack supported by said means with the rear end spaced outwardly beyond'the front end of said casing track and casing to support said drawerwith the rear end spaced outwardly beyond the front of said casing, andto a rear lposition having said means and drawer track housed in thecasing with said drawer, a wheel supported by said intermediate carryingmeans having peripheral engagement with the rear end of said drawertrack in the forward position, a second wheel having peripheralengagement with the forward end of said casing track in the forwardposition, and means for transmitting motion from the first-mentionedwheel to the second wheel operable in the movement of the drawer trackto produce the progressive movement of said intermediate carrying memberand movement of said wheels along said tracks until they reach theopposite ends of said tracks in the rear position.

5. An over-travel drawer support for mounting a drawer in its casing,comprising a track on the drawer, a track on the casing,intermeoutwardly beyond the front' end of said casing track and casingto support saiddrawer with the rear end spaced outwardly beyond thefront of said casing, and to a rear position having said means anddrawer track housed in the casing with said drawer, a. wheel carried byand movable relative to said intermediate carrying means havingperipheral engagement with the rear end of said drawer track in saidforwardly extending position, a second wheel movably mounted relative tosaid intermediate carrying means having peripheral engagement with theforward end of said casing track in said forwardly extending position,and means associated with said intermediate carrying means and connectedwith both of said wheels for transmitting motion from thefirst-mentioned wheel to the second-mentioned wheel for moving saidintermediate carrying means in proportionate progressive relation tosaid tracks in the operation of said drawer track from said forwardlyextending position to said -rear position and vice versa.

6. An over-travel drawer support for mounting a drawer in its casing,comprising a track on the dra-wer, a track on the casing, intermediatecarrying means, bearings mounting said drawer track and means for freerelative movement to each other on said casing track to a forwardlyextending position with said means having one end projecting outwardlybeyond the forward end of said casing track and the front end of saidcasing, and said drawer track supported by said means with the rear endspaced outwardly beyond the front end of said casing track and casing todiate carrying means, bearings mounting said` support said drawer withthe rear end spaced outwardly beyond the front of said casing, and to arear position having said means and drawer track housed in the casingwith said drawer, a wheel mounted for relative movement on saidintermediate carrying means having peripheral engagement with one sideof said drawer track, a bearing on said intermediate carrying meansengaging the opposite side of said drawer track in opposed relation tosaid wheel, said wheel and oppositely engaging bearing cooperatingthrough the weight of the drawer on said drawer track and intermediatecarrying means to move said wheel toward said drawer track for grippingsaid drawer track between said wheel and opposed bearing, a second wheelassociated with said intermediate carrying means having peripheralengagement with the front end of said casing track in said forwardlyextending position` means for transmitting motion from said first wheelto said second wheel in the movement of said drawer track, said rstwheel and opposed bearing cooperating to provide a positive feed of saidintermediate carrying means in progressive relation to said drawer andcasing track through cooperation thereof with said drawer track and thecooperation thereof with said second wheel throughout movement of saiddrawer track from said forwardly extending position to said rearposition, and vice versa.

7. An over-travel drawer support for supporting a drawer in its casing,comprising a track on the'drawer, a track on the casing, intermediatecarrying means, bearings mounting said drawer` track and means for freerelative movement to each other on said casing track to a forwardlyextending position with said means having one end projecting outwardlybeyond the forward end of said casing track and the front end of saidcasing, and said drawer track supported by said means with the rear endspaced outwardly beyond the front end of said casing track and casingto" support said drawer with the rear end spaced outf wardly beyond thefront of said casing, and to a rear position having said means anddrawer track housed in the casing with said drawer, a floating memberadjacent said intermediate carrying means, a wheel rotatable on saidfloating member having peripheral engagement with said drawer track, abearing mounted on said intermediate carrying means opposed to saidwheel and engaging said drawer track on a side opposite said wheelwhereby said drawer track has a portion gripped between said opposedbearing and said wheel for rotating said wheel in movement of saiddrawer track, said wheel engaging the rear end of said drawer track inthe forwardly extending position, a second wheel carried by saidfloating member having a peripheral engagement in the forwardlyextending position with the front end of said casing track, and drivingmeans for said second wheel operable in the movement of said drawerguide from said forwardly extending Vposition to the rear position toprogressively move said intermediate carrying member continuously andproportionately to the movement of said drawer track.

8. An over-travel drawer support for supporting a drawer in its casing,comprising a track on the drawer, a track on the casing, intermediatecarrying means, bearings mounting said drawer track and means for freerelative movement to each other on said casing track to a forwardlyextending position with said means having one end projecting outwardlybeyond the forward end of said casing track and the front end of saidcasing, and said drawer track supported by said means with the rear endspaced outwardly beyond the front end of said casing track and casing tosupport said drawer with the rear end spaced outwardly beyond the frontof said casing, and to a rear position having said means and drawertrack housed in the casing with said drawer, a lever pivoted on saidintermediate carrying means, an intermediate bearing on said carryingmeans, a wheel on said lever, having peripheral engagement with one sideof said drawer track while the opposite side engages saidintermediatebearing to effect a gripping of the drawer track betweensaid intermediate bearing and wheel obtained through the weight of thedrawer operating on said lever and wheel, a second wheel rotatablymounted on said lever and having peripheral engagement with said casingtrack, and an idler wheel having peripheral engagement with the twowheels aforementioned for transmitting motion from one t0 the other,said first-mentioned wheel having its periphery engaging the rear end ofsaid drawer track in said forwardly extending position and said secondwheel having its periphery engaging the forward end of said casing trackin said forwardly extending position, said wheels cooperating toprogressively move said intermediate carrying member in the operation ofsaid drawer track from said forwardly extending position to said rearposition, and vice versa.

9. An over-travel drawer support for mounting a drawer in its casing,comprising a track on the drawer, a track on the casing, an intermediatecarrying member, bearings between said intermediate carrying member andsaid drawer and casing tracks supporting said drawer track andintermediate member for free movement relative to each other and saidcasing track to a forwardly uerd of said casing track and lthe front ofsaid casing and said drawer track supported by said intermediate memberwith the rear end spaced outwardly beyond the front end of said casingtrack and casing to support said drawer with its rear end spacedoutwardly beyond the front of said casing, and to a rear position havingits intermediate member and drawer track housed in the casing with saiddrawer, a lever pivoted on said intermediate member, a wheel rotatableon said lever having peripheral engagement with said drawer t/rack atthe rear end thereof in said forwardly extending position in opposedrelation to a bearing on said intermediate member whereby the weight ofsaid drawer causes said wheel to grip said drawer track, a second wheelrotatably mounted on said lever having peripheral engagement with thefront end of said casing track in said forwardly extending position, anidler wheel rotatable on said lever and having peripheral engagementwith the other two wheels thereon for transmitting motion from one wheelto the other, whereby movement of said drawer track from saidforwardlyextending position produces substantially positive progressive movementof said intermediate member with said drawer track during movement intosaid rear position, and vice versa.

10. An over-travel drawer support for mounting a drawer in its casing,comprising a track on the drawer, a track on the casing, an intermediatecarrying member, bearings on said intermediate member normally mountingsaid drawer track and intermediate member for free relative movement toeach other and said casing track to a forwardly extending position withsaid member haying one end projecting outwardly beyond the forward endof said casing track and the front end of said casing, and said drawertrack supported by said member with the rear end spaced outwardly beyondthe front end of said casing track and casing to support said drawerwith the rear end thereof spaced outwardly beyond the front of saidcasing, and to a rear position having said means and drawer trackyhoused in the casing with said drawer, a rack on said drawer track, arack on said casing track, a pinion rotatable on said intermediatemember having its periphery intermeshed with the rear end of the rack onsaid drawer track in said forwardly extending position, a pinionrotatable on said intermediate member in spaced relation to said firstmentioned pinion and having its periphery intermeshed with the forwardend of the rack on said casing track in said forwardly extendingposition, and an idler pinion rotatable on said intermediate memberhaving its periphery intermeshed with the peripheries of said first twomentioned pinions for transmitting motion from one pinion to the other,said pinions cooperating in the movement of said drawer track from saidforwardly extending position to said rear position to positively movesaid intermediate member in proportionate relation to the motion of saiddrawer track.

11. An over-travel drawer support for mounting a drawer in its casing,comprising a track on the drawer, a track on the casing, a pair ofintermediate carrying members, bearings on said intermediate carryingmembers mounting said drawer track and said members for free relativemovement to each other and said casing track to a forwardly extendingposition with said members having one end of each projecting outwardlybeyond the forward end of said casing track and casing and said drawertrack supported by said members with the rear end spaced outwardlybeyond the front end of said casing track and casing to support saiddrawer with the rear end thereof spaced outwardly beyond the front ofsaid casing, and to a rear position having said members and drawer trackhoused in the casing with said drawer, a wheel rotatable on one of saidmembers normally having its periphery retained in engagement with therear end of said drawer track in said forwardly extending position forrotation by said drawer track in the movement thereofbetween saidforwardly extending and rear positions, a. second wheel rotatablymounted on the other member normally having peripheral engagement withthe ilrst mentioned member and said casing track, said wheels beingoperable in the operation of said drawer track to produce continuousprogressive and relative proportionate movement of each of said membersrelative to each other and said drawer track between said forwardlyextending 10

